Virtual Subhosting

Virtual Subhosting is one of the most powerful features of the Virtual Private Server and our
Apache Web Server. This feature allows you to support multiple domain
names that each resolve to their own unique subdirectories on a single Virtual Private Server.
In other words, you can host bob.com and jim.com on the same Virtual Private Server,
each with its own domain name and unique site content. You can also offer each Virtual Subhost
customer their own unique FTP login with access to their own subdirectory and e-mail addresses
using their own domain name. Please note our system also supports multi-homing.

To add another domain to your Virtual Private Server account please contact ITS
Sales. Note there is a one-time fee for
this service.

Limitations

For performance reasons, we have established guidelines with regard to the number of Virtual
Subhosts you should place on a single Virtual Private Server. Keep in mind that these guidelines
are suggested so that the performance of your own Virtual Private Server and Virtual Subhost domains
is not compromised.

Server A:

around 5 low volume subhosts

Server B:

around 25 low volume subhosts

Server C:

around 60 low volume subhosts

For higher volume web sites, a lower number would apply of course. For more information, see
the following.

Configuration

Configuring Virtual Subhosts need not be a daunting task. There are several methods you can use
to do it. A utility that automates Virtual Subhost configuration can be easier, faster, and more
user-friendly. If you require more flexibility to fine tune the setup to your exact needs, then
you should configure your Virtual Subhosts by hand.

vaddhost
The vaddhost utility is an interactive, command-line program that automates the process
of configuring Virtual Subhosts.

Manually Configuring Virtual Subhosts
It is possible to configure Virtual Subhosts by hand. These instructions include directions
for setting up cgi-bin access, separate web server log files, and other features.

Virtual Subhosting Help

Please note: the information on this page applies to ITS web hosting plans. It may or may not apply to other environments. If you are looking for a feature described here, or better support from your hosting provider, please consider hosting your site with ITS!